Published Papers
(Approximately in reverse chronological order)

S.H. Park, Y. Nanishi, J.M. Xu, E.J. Yoon, " Improved emission efficiency of a- plane GaN light emitting diodes with silica nano-spheres integrated into a-plane GaN buffer layer," Appl. Phys. Lett., 100,191116, 2012.

S. Jung, K.-B. Kim, G. Fernandes, J. H. Kim, F. Wahab and J. Xu, " Enhanced thermoelectric power in nanopatterned carbon nanotube film," Nanotechnology , vol. 23135704, 2012.

Jin Ho Kim, Do-Joong Lee, Seungwoo Jung, Michael Jokubaitis, Hyunmi Kim, Ki-Bum Kim, Jimmy Xu, " Carbon Nanotube Composite for EMI Shielding and Thermal Signature Reduction ," J. of Composite Materials, 2012.

V. Chivukula, D. Ciplys, J.H.Kim, R.Rimeika, J.Xu, M. Shur, " Surface Acoustic Wave Response to Optical Absorption by Graphene Composite Film," IEEE Ultrasonics, Ferroelectrics, and Frequency Control,265-270, 59(2) 2012.

L. Kuznetsova, G. E. Fernandes, and J. Xu, " Silicon emission in and out resonant coupling with high Q optical mode ," Proc. SPIE, vol. 8268, 82681G, 2012.

L. Kuznetsova, G. E. Fernandes, and J. Xu, " Silicon emission in and out resonant coupling with high Q optical mode ," Proc. SPIE, vol. 8268, 82681G, 2012.

R. Osgood III, S. Giardini, J. Carlson, G. E. Fernandes, J. H. Kim, J. Xu, M. Chin, B. Nichols, M. Dubey, P. Parilla, J. Berry, R. O'Hayre, D. Ginley, P. Periasamy, H. Guthrey, R. O'Hayre, and W. Buchwald, " Diode-coupled Ag nanoantennas for nanorectenna energy conversion ," Proc. SPIE, vol. 8096-35, 2011.

A. K. Sood, E. J. Egerton, Y. R. Puri, G. Fernandes, J. H. Kim, J. Xu, N. Goldsman, N. K. Dhar, P. S. Wijewarnasuriya, and B. I. Lineberry, " Carbon nanotube based microbolometer development for IR imager and sensor applications ," Proc. SPIE, vol. 8155, 815513, 2011.

J. H. Kim, G. Withey, C. -H. Wu, and J. Xu, " Carbon Nanotube Array for Addressable Nano-Bioelectronic Transducers ," IEEE Sensors Journal, vol. 11, 1274, 2011.

A. Dobrinsky, A. Sadrzadeh, B.I. Yakobson, J. Xu, " Electronic Structure of Graphene Nanoribbons Subjected to Twist and Nonuniform Strain ," (invited)special issue, Intl. J. of High Speed Electronics and Systems, vol. 20(1), 153-160, 2011.

S. K. Panda, D. Han, H. Yoo, H. Shin, H. Park, and J. Xu, " Synthesis of Step-Shaped Bismuth Nanowires-An Approach Towards the Fabrication of Self-Homojunction ," Electrochemical and Solid-State Letters, vol. 14 (6), E21-E24, 2011.

H. Park, J. H. Kim, R. Beresford, and J. Xu, " Effects of electrical contacts on the giant photoconductive gain in a nanowire ," Appl. Phys. Lett., vol. 99, 143110, 2011.

G. E. Fernandes, M. B. Tzolov, J. H. Kim, Z. Liu, and J. Xu, " Quantum Functional Multiple-Heterojunction Devices in Filled Carbon Nanotubes ," J. Phys. Chem. C, vol. 114, 22703, 2010.

H. Park, R. Beresford, S. Hong, and J. Xu, " Geometry-and-size-dependence of electrical properties of metal contacts on semiconducting nanowires ," J. Appl. Phys., vol. 108, 094308, 2010.

G. E. Fernandes1, Z. Liu, J. H. Kim, C. -H. Hsu, M. B. Tzolov, and J. Xu, " Quantum Dot/Carbon Nanotube/Silicon Double Heterojunction for Multi-Band Room Temperature Infrared Detection ," IoP Nanotechnology, vol. 21, 465204, 2010.

C.-H. Hsu, S. Cloutier, S. Palefsky, J. Xu, " Synthesis of Diamond Nanowires using Atmospheric-Pressure Chemical Vapor Deposition ," Nano Lett., vol. 10, 3272--3276, 2010.

A. K. Sood, R. A. Richwine, Y. R. Puri, A. Akturk, N. Goldsman, S. Potbhare, G. Fernandes, C. -H. Hsu, J. H. Kim, J. Xu, N. K. Dhar, P. S. Wijewarnasuriya, and B. I. Lineberry, " Design and Development of Carbon Nanostructure based Microbolometers for IR Imagers and Sensors ," Proc. SPIE, vol. 7679, 76791Q, 2010.

R. Osgood III, S. Giardini, J. Carlson, B. Kimball, M. Hoey, G. E. Fernandes, Z. Liu, J. H. Kim, J. Xu, and W. Buchwald, " Coupled, Large-Area Gold Nanowire Arrays for Nanorectenna Energy Conversion ," Proc. SPIE, vol. 7757, 775715, 2010.

J. H. Kim, H. Park, C. -H. Hsu and J. Xu, "Facile Synthesis of Bismuth Sulfide Nanostructures and Morphology Tuning by Biomolecule ," J. Phys. Chem. C, vol. 114, pp. 9634-9639, 2010.

Z. Liu, J.M. Shainline, G.E. Fernandes, J. Xu, J. Chen, and C.F. Gmachl, "Continuous-wave subwavelength microdisk lasers at 1.53 um," Optics Express, vol. 18, pp. 19242-19248, 2010.

G. E. Fernandes, J. H. Kim, Z. Liu, J. Shainline, R. Osgood III, and J. Xu, "Using a Forest of Gold Nanowires to Reduce the Reflectivity of Silicon ," Opt. Mater., vol. 32, pp. 623-626, 2010.

J. M. Shainline, G. Fernandes, Z. Liu, and J. Xu, "Broad tuning of whispering-gallery modes in silicon microdisks," Opt. Express, vol. 18, pp. 14345-14352, 2010.

H. Park, H. Shin, J. H. Kim, S. Hong, and J. Xu, "Memory effect of a single-walled carbon nanotube on nitride-oxide structure under various bias conditions ," Appl. Phys. Lett., vol. 96, 023101, 2010

H.Q. Nguyen, S.M. Hollen, M.D. Stewart, Jr., J. Shainline, A. Yin, J. Xu, and J.M. Valles, " Observation of giant positive magnetoresistance in a Cooper pair insulator ," Phys. Rev. Lett., vol. 103, 157001, 2009.

M. D. Stewart Jr., H. Q. Nguyen, S. M. Hollen, A. Yin, J. M. Xu, and J. M. Valles Jr., " Enhanced suppression of superconductivity in amorphous films with nano-scale patterning ," Physica C, vol. 774, 469, 2009.

J.M. Shainline and J. Xu, "Slow light and band gaps in metallodielectric cylinder arrays ," Optics Express, vol. 17, pp. 8879-8891, 2009.

Z. Liu, J. H. Kim, G. E. Fernandes, and J. Xu, "Room Temperature Photocurrent Response of PbS/InP Heterojunction ," Appl. Phys. Lett., vol. 95, 231113, 2009.

J. Shainline, S. Elston, Z. Liu, G. Fernandes, R. Zia, and J. Xu, "Subwavelength silicon microcavities," Opt. Express, vol. 17, pp. 23323-23331, 2009.

J.M. Shainline and J. Xu, (invited) "Directly-pumped silicon lasers," Optics and Photonics News, vol. 19, no. 5, pp. 34-39, 2008.

H. Park, D. Han, J. H. Kim, C.-H. Hsu, H. Shin, and J. Xu, "One Material, Multiple Faces - Nanostructured Bismuth," ECS Transaction, vol. 25 (11), pp. 25-33, 2009.

N. Lebedev, S. Trammell, S. Tsoi, A. Spano, J. Xu, J.-H. Kim, M. Twigg, and J. Schnur, "Increasing efficiency of photoelectronic conversion by encapsulation of photosynthetic reaction center proteins in arrayed carbon nanotube electrode," Langmuir, vol. 24, no. 16, pp. 8871-8876, 2008.

M. Jouzi, M. Kerby, A. Tripathi, and J. Xu, "A nanoneedle method for high-sensitivity low-background monitoring of protein activity," Langmuir, vol. 24, no. 19, pp. 10786-10790, 2008.

G. Withey, J.-H. Kim, and J.M. Xu, ?œDNA-programmable multiplexing for scalable, renewable redox protein bio-nanoelectronics,??Bioelectrochemistry, vol. 74, pp. 111??17, 2008.

T.F. Kuo, M.B. Tzolov, D.A. Straus, and J. Xu, ?œElectron transport characteristics of the carbon nanotubes/Si heterodimensional heterostructure,??Appl. Phys. Lett., vol. 92, art. no. 212107, 2008.

M. Stewart, A.J. Yin, J.M. Xu, and J. Valles, ?œMagnetic-field-tuned superconductor-to-insulator transitions in amorphous Bi films with nanoscale hexagonal arrays of holes,??Phys. Rev. B., vol. 77, art. no. 140501, 2008.

M. Stewart, A.J. Yin, J.M. Xu, and J. Valles, ?œSuperconducting pair correlations in an amorphous insulating nano-honeycomb film,?? Science, vol. 318, pp. 1273-1275, 2007. (listed in the AIP Bullitine of Physics News, Number 850 #1, December 13 , 2007, as one of ?˜Ten Top Physics Stories for 2007??)

J. Shainline and J. Xu, (invited) ?œSilicon as an emissive optical medium,??Laser & Photon. Rev., vol 1, no. 4, pp. 334??48, 2007.

E. Rotem, J. Shainline, and J.M. Xu, ?œElectroluminescence of nanopatterned silicon with carbon implantation and solid phase epitaxial regrowth,??Optics Express, vol. 15, no. 21, pp. 14099-14106, 2007.

E. Rotem, J. Shainline, and J.M. Xu, "Enhanced photoluminescence from nanopatterned carbon-rich silicon grown by solid-phase epitaxy," Appl. Phys. Lett., vol. 91, ?art. no. 051127, 2007.

D.P. Wang, D.E. Feldman, B.R. Perkins, A.J. Yin, G.H. Wang, J.M. Xu, and A. Zaslavsky, "Hopping conduction in disordered carbon nanotubes," Solid State Comm., vol. 142, no. 5, pp. 287-291, 2007.

W. Guo, R.S. Guico, J.M. Xu, and R. Beresford, "Kinetic Monte Carlo simulation of InAs quantum dot growth on nonlithographically patterned substrates," J. Vac. Sci. Technol. B, vol. 24, no. 3, pp. 1072-1076, 2007.

A.J. Yin, R. Guico, and J.M. Xu, ?œFabrication of anodic aluminum oxide templates on curved surfaces,??Nanotechnology, vol. 18, no. 3, art. no. 035304, 2007.

J.I. Yeh, S. Du, T. Xia, A. Lazareck, J-H. Kim, J. Xu, and A.E. Nel, "Coordinated nanobiosensors for enhanced detection: integration of three-dimensional structures to toxicological applications," ECS Transactions, vol. 3, no. 29, pp. 115-126, 2007.

J. Yeh, A. Lazareck, and J.M. Xu, "Peptide nanowires for coordination and signal transduction of peroxidase biosensors to carbon nanotube electrode arrays," Biosensors and Bioelectronics, vol. 23, pp. 568-574, 2007.

M. Tzolov, T.-F. Kuo, D. Straus, and J.M. Xu, ?œCarbon nanotube-silicon heterojunction hyperspectral photocurrent response,??Mater. Res. Soc. Symp. Proc., vol. 963, art. no. 0963-Q22-01, 2007.

A. Yin, M. Tzolov, D. Cardimona, and J. Xu, ?œFabrication of highly ordered anodic aluminum oxide templates on silicon substrate,??IET Circuits, Devices & Systems, vol 1., no.3, pp. 205-209, 2007.

T. Andrews, A. Yin, and J.M. Xu, ?œInelastic laser light scattering study of an ordered array of carbon nanotubes,??Appl. Phys. Lett., vol. 90, art. no. 201918, 2007.

D. Straus, T.-F. Kuo, M. Tzolov, and J. Xu, "Photocurrent response of the carbon nanotube-silicon heterojunction array," IET Circuits, Devices & Systems, vol. 1, no. 3, pp. 200-204, 2007.

M. Tzolov, T.-F. Kuo, D. Straus, and J. Xu, "Carbon nanotube - silicon heterojunction arrays and infrared photocurrent responses," J. Phys. Chem. C, vol. 111, no. 15, pp. 5800-5804, 2007.

G.D. Withey, J.-H. Kim, and J.M. Xu, ?œWiring efficiency of a metallizable DNA linker for site-addressable nanobioelectronic assembly,??Nanotechnology, vol. 18, no. 42, art. no. 424025, 2007.

R.S. Guico, M. Tzolov, W. Guo, S.G. Cloutier, R. Beresford, and J. Xu, "Fabrication and optical characterization of highly ordered InAs/GaAs quantum dots on nonlithographically patterned substrates," J. Vac. Sci. Technol. B, vol. 25, no. 3, pp. 1093-1097, 2007.

M.R. Contarino, M. Sergi, A.E. Harrington, A. Lazareck, J. Xu, and I. Chaiken, "Modular, self-assembling peptide linkers for stable and regenerable carbon nanotube biosensor interfaces," J. of Mol. Recognit., vol. 19, no. 4, pp. 363-371, 2006.

A.D. Lazareck, S.G. Cloutier, T.-F. Kuo, B.J. Taft, S.O. Kelley, and J.M. Xu, "Opto-electrical characterization of zinc oxide nanorods grown by DNA directed assembly on vertically aligned carbon nanotube tips," Appl. Phys. Lett., vol. 89, art. no. 10309, 2006.

T.F. Kuo and J.M. Xu, "Growth and application of highly ordered array of vertical nanoposts," J. Vac. Sci. Technol. B, vol. 24, no. 4, pp. 1925-1933, 2006.

A. Yin and J. Xu, ?œFabrication of highly ordered and densely packed silicon nanoneedle arrays for biosensing applications,??Mater. Res. Soc. Symp. Proc., art. no. O11-02, 2006.

A. Yin, M. Tzolov, D. Cardimona, and J. Xu, ?œTemplate-growth of highly ordered carbon nanotube arrays on silicon,??IEEE Trans. Nanotechnol., vol. 5, no. 5, pp. 564-567, 2006.

S.G. Cloutier, J.N. Eakin, R.S. Guico, G.P. Crawford, and J.M. Xu, "Molecular self-organization in cylindrical nanocavities," Phys. Rev. E, vol. 73, art. no. 051703, 2006.

A.D. Lazareck, S.G. Cloutier, T.F. Kuo, B.J. Taft, S.O. Kelley, and J.M. Xu, "DNA-directed synthesis of zinc oxide nanowires on carbon nanotube tips," Nanotechnology, vol. 17, pp. 2661??664, 2006. (Featured as Nanotechnology Journal Highlights, May 10, 2006, nanotechweb.org)

S. Cloutier, C.H. Hsu, P. Kosseyrev, and J.M. Xu, ?œEnhancement of radiative recombination in silicon via phonon localization and selection-rule breaking,??Adv. Mater., vol. 18, no. 7, pp. 841-844, 2006. (featured as the cover article in Advanced Materials, April 4, 2006 issue).

M.D. Stewart, Z. Long, J.M. Valles, A. Yin, and J.M. Xu, ?œMagnetic-flux periodic response of nanoperforated ultrathin superconducting films,??Phys. Rev. B., vol. 73, art. no. 092509, 2006.

D. Levner, M. Fay, and J.M. Xu, ?œProgrammable spectral design using a simple binary Bragg-diffractive structure,??IEEE J. Quantum Electron., vol. 42, no. 4, pp. 410-417, 2006.

S. Cloutier, A. Lazareck, and J.M. Xu, ?œDetection of nano-confined DNA using surface-plasmon enhanced fluorescence,??Appl. Phys. Lett., vol. 88, art. no. 013904, 2006.

J.F. Waters, P. R. Guduru, and J.M. Xu, ?œNanotube mechanics ??recent progress in shell buckling mechanics and quantum electromechanical coupling,??J. Composites Sci. Technol., vol. 66, no. 9, pp. 1141-1150, 2006.

N. Kouklin, W Kim, A. Lazareck, and J.M. Xu, "Carbon nanotube probes for single cell experimentation and assays," Appl. Phys. Lett., vol. 87, art. no. 172901, 2005.

S. Cloutier, P. Kossyrev, and J.M. Xu, ?œOptical gain and stimulated emission in periodic nanopatterned crystalline silicon,??Nature Materials, vol. 4, pp. 887-891, 2005.

P.A. Kossyrev, A. Yin, S.G. Cloutier, D.A. Cardimona, D. Huang, P.M. Alsing, and J.M. Xu, ?œElectric field tuning of plasmonic response of nanodot array in liquid crystal matrix,??Nano Letters, vol. 5, no. 10, pp. 1978-1981, 2005.

N. Pavenayotin, M.D. Stewart, J.M. Valles, and J.M. Xu, ?œspontaneous formation of ordered nano-crystal arrays in films evaporated onto nanopore array substrates,??Appl. Phys. Lett., vol. 87, art. no. 193111, 2005.

D.P. Wang, B.R. Perkins, A.J. Yin, A. Zaslavsky, J.M. Xu, R. Beresford, and G.L. Snider, ?œCarbon nanotube gated lateral resonant tunneling field-effect transistors,??Appl. Phys. Lett., vol. 87, art. no. 152102, 2005.

S. Cloutier, R. Guico, and J.M. Xu, ?œPhonon-localization in periodic uniaxially-nanostructured silicon,??Appl. Phys. Lett., vol. 87, art. no. 222104, 2005.

J.F. Waters, P.R. Guduru, and J.M. Xu, "Shell buckling of individual multiwalled carbon nanotubes using nanoindentation," Appl. Phys. Lett., vol. 87, art. no. 103109, 2005.

B.R. Perkins, D.P. Wang, D. Soltman, A.J. Yin, J.M. Xu, and A. Zaslavsky, ?œDifferential current amplification in three-terminal Y-junction carbon nanotube devices,??Appl. Phys. Lett., vol. 87, art. no. 123504, 2005.

R. Beresford and J.M. Xu, ?œResponse to ?˜Comment on a growth pathway for highly ordered quantum dot arrays,'??Appl. Phys. Lett., vol. 86, art. no. 206102, 2005.

W. Guo, R.S. Guico, R. Beresford, and J.M. Xu, ?œgrowth of highly ordered relaxed InAs/GaAs quantum dots on non-lithographically patterned substrates by molecular beam epitaxy,??J. Cryst. Growth, vol. 287, pp. 509-513, 2005.

G. Withey, J. Yeh, A. Lazareck, M. Tzolov, P. Aich, A. Yin, and J.M. Xu, ?œUltra-high redox enzyme signal transduction using highly ordered carbon nanotube array electrodes,??Biosens. Bioelectron., vol. 21, pp. 1560-1565, 2005.

S.D. Hersee, X.Y. Sun, X. Wang, N.M. Fairchild, J. Liang, and J.M. Xu, "Nanoheteroepitaxial growth of GaN on Si nanopillar arrays," J. Appl. Phys., vol. 97, art. no. 124308, 2005.

J. Liang, H. Luo, R. Beresford, and J.M. Xu, ?œA growth pathway for highly ordered quantum dot arrays,??Appl. Phys. Lett., vol. 85, no. 24, pp. 5974-5976, 2004.

H. Chick, J. Liang, S.G. Cloutier, N. Kouklin, and J.M. Xu, "Periodic array of uniform ZnO nanorods by second-order self-assembly," Appl. Phys. Lett., vol. 84, no. 17, pp. 3376-3378, 2004.

A.Z. Hartman, M. Jouzi, R.L. Barnett, and J.M. Xu, "Theoretical and experimental studies of carbon nanotube electromechanical coupling," Phys. Rev. Lett., vol. 92, art. no. 236804, 2004.

J.F. Waters, L. Riester, M. Jouzi, P.R. Guduru, and J.M. Xu, "Buckling instabilities in multiwalled carbon nanotubes under uniaxial compression," Appl. Phys. Lett., vol. 85, no. 10, pp. 1787-1789, 2004.

C. Papadopoulos, A.J. Yin, and J.M. Xu, "Temperature-dependent studies of Y-junction carbon nanotube electronic transport," Appl. Phys. Lett., vol 85, no. 10, pp. 1769-1771, 2004.

R. Gasparac, B.J. Taft, M.A. Lapierre-Devlin, A.D. Lazareck, J.M. Xu, and S.O. Kelley, "Ultrasensitive electrocatalytic DNA detection at two- and three-dimensional nanoelectrodes," J. Am. Chem. Soc., vol. 126, no. 39, pp.12270-12271, 2004.

B.J. Taft, A.D. Lazareck, G.D. Withey, A.J. Yin, J.M. Xu, and S.O. Kelley, "Site-specific assembly of DNA and appended cargo on arrayed carbon nanotubes," J. Am. Chem. Soc., vol. 126, no. 40, pp. 12750-12751, 2004.

N. Kouklin, M. Tzolov, D. Straus, A. Yin, and J.M. Xu, "Infrared absorption properties of carbon nanotubes synthesized by chemical vapor deposition," Appl. Phys. Lett., vol. 85, no. 19, pp. 4463-4465, 2004.

M. Tzolov, B. Chang, A. Yin, D. Straus, J.M. Xu, and G. Brown, "Electronic transport in a controllably grown carbon nanotube-silicon heterojunction array," Phys. Rev. Lett., vol. 92, art. no. 075505, 2004.

A.J. Yin, H. Chik, and J. Xu, "Postgrowth processing of carbon nanotube arrays - Enabling new functionalities and applications," IEEE Trans. Nanotechol., vol. 3, no. 1, pp. 147-151, 2004.

Z. Xia, L. Riester, B.W. Sheldon, W.A. Curtin, J. Liang, A. Yin, and J.M. Xu, "Mechanical properties of highly ordered nanoporous anodic alumina membranes," Rev. Adv. Mater. Sci., vol. 6, no. 2, pp. 131-139, 2004.

Z. Xia, L. Riester, W.A. Curtin, H. Li, B.W. Sheldon, J. Liang, B. Chang, and J.M. Xu, "Direct observation of toughening mechanisms in carbon nanotube ceramic matrix composites," Acta Materialia, vol. 52, no. 4, pp. 931-944, 2004.

H. Chik and J.M. Xu, "Nanometric superlattices: non-lithographic fabrication, materials, and prospects," Mater. Sci. Eng. R, vol. 43, no. 4, pp. 103-108, 2004.

N. Kouklin, H. Chik, J. Liang, M. Tzolov, J.M. Xu, J.B. Heroux, and W.I. Wang, "Highly periodic, three-dimensionally arranged InGaAsN : Sb quantum dot arrays fabricated nonlithographically for optical devices," J. Phys. D, vol. 36, no. 21, pp. 2634-2638, 2003.

J. Xu, (Invited) "Nanotube electronics: Non-CMOS routes," Proc. IEEE, vol. 91, no. 11, pp. 1819-1829, 2003.

J. Liang, S.K. Hong, N. Kouklin, R. Beresford R, and J.M. Xu, "Nanoheteroepitaxy of GaN on a nanopore array Si surface," Appl. Phys. Lett., vol. 83, no. 9, pp. 1752-1754, 2003.

U. Welp, Z.L. Xiao, J.S. Jiang, V.K. Vlasko-Vlasov, S.D. Bader, G.W. Crabtree, J. Liang, H. Chik, and J.M. Xu, "Vortex pinning in Nb films patterned with nano-scale hole-arrays," Physica B, vol. 329, pp. 1338-1339, 2003.

A.J. Bennett and J.M. Xu, "Simulating the magnetic susceptibility of magnetic nanowire arrays," Appl. Phys. Lett., vol. 82, no. 19, pp. 3304-3306, 2003.

A.J. Bennett and J.M. Xu, "Simulating collective magnetic dynamics in nanodisk arrays," Appl. Phys. Lett., vol. 82, no. 15, pp. 2503-2505, 2003.

C. Papadopoulos, A. Rakitin, and J.M. Xu, "Carbon nanotube self-doping: calculation of the hole carrier concentration," Phys. Rev. B., vol. 67, art. no. 033411, 2003.

G.W. Crabtree, U. Welp, Z.L. Xiao, J.S. Jiang, V.K. Vlasko-Vlasov, S.D. Bader, J. Liang, H. Chik, and J.M. Xu, "Vortices in dense self-assembled hole arrays," Physica C, vol. 387, no. 1-2, pp. 49-56, 2003.

D. Hoppe, B. Hunt, M. Hoenk, F. Noca, and J.M. Xu, "Carbon nanotube arrays enable ultra-miniature RF circuits," NASA Tech Briefs, 30207, 2003

J.M. Xu, (Invited) "Carbon nanotube IR properties and applications," Proc. SPIE, vol. 4823, pp. 88-95, 2002.

U. Welp, Z.L. Xiao, J.S. Jiang, V.K. Vlasko-Vlasov, S.D. Bader, G.W. Crabtree, J. Liang, H. Chik, and J.M. Xu, "Superconducting transition and vortex pinning in Nb films patterned with nanoscale hole arrays," Phys. Rev. B., vol. 66, art. no. 212507, 2002.

C. Papadopoulos, B. Chang, A. Yin, and J.M. Xu, (Invited) "Engineering carbon nanotubes via template growth," Intl. J. Nanoscience, vol. 1, no.3/4, pp. 205-212, 2002.

J. Liang, H. Chik, and J.M.. Xu, (Invited) "Non-lithographic fabrication of lateral superlattices for nanometric electromagnetic-optic applications," IEEE J. Sel. Top. Quantum Electron., vol. 8, no. 5, pp. 998-1008, 2002.

I. Levisky, J. Liang, and J.M. Xu, "Highly ordered arrays of organic-inorganic nanophotonic composites," Appl. Phys. Lett., vol. 81,? no. 9, pp.1696-1698, 2002.

J. Liang, H. Chik, A. Yin, and J.M. Xu, "Two-dimensional superlattices of nanostructures: nonlithographic formation by anodic alumina membrane template," J. Appl. Phys., vol. 91, no. 4, pp. 2544-2546, 2002.

L. Chen, A. Yin, J.S. Im, A.V. Nurmikko, J.M. Xu, and J. Han, "Fabrication of 50-100nm patterned InGaN blue light emitting heterostructures," Phys. Stat. Sol. A, vol. 188, No.1, pp. 135-138, 2001.

G.P. Wiederrecht, D.M. Tiede, G.A. Wurtz, L.X. Chen, T. Liu, and J.M. Xu, "Unique Structures of Nanoconfined Liquid Crystals Doped with Photoinduced Charge Transfer Compound," Adv. Photon Source, 2001.

A.J. Yin, J. Li, W. Jian, A.J. Bennett, and J.M. Xu, "Fabrication of highly ordered metallic nanowire arrays by electrodeposition," Appl. Phys. Lett., vol. 79, no. 7, pp. 1039-1041, 2001.

J.M. Xu, (Invited) "Highly ordered carbon nanotube arrays and IR detection," Infrared Phys. Technol., vol. 42, pp. 485-491, 2001.

A. Rakitin, P. Aich, C. Papadopoulos, Y. Kobzar, A.S. Vedeneev, J.S. Lee, and J.M. Xu, "Metallic conduction through engineered DNA: DNA nanoelectronic building blocks," Phys. Rev. Lett., vol. 86, pp. 3670-3673, 2001.

P.H. Siegel, A. Fung, H. Manohara, J. Xu, and B. Chang, "Nanoklystron: a monolithic tube approach to THz power generation," 12th Int. Conf. Space THz Tech. Proc., 2001.

J.M. Xu, (Invited) "Plastic electronics and future trends in microelectronics," Synth. Met., vol. 115, pp. 1-3, 2000.

C. Papadopoulos, A. Rakitin, J. Li, A.S. Vedeneev, and J.M. Xu, "Electronic transport in Y-junction carbon nanotubes," Phys. Rev. Lett., vol. 85, pp. 3476-3479, 2000.

P.H. Siegel, T.H. Lee, and J. Xu, "The Nanoklystron: A new concept for THz power generation," JPL New Technology Report, NPO 21014, March 21, 2000.

J. Li, C. Papadopoulos, and J.M. Xu, "Growing Y-junction carbon nanotubes," Nature, vol. 402, pp. 253-254, 2000.

A. Rakitin, C. Papadopoulos, and J.M. Xu, "Electronic properties of amorphous carbon nanotubes," Phys. Rev. B, vol. 60, pp.5793-5796, 2000.

R. Gordon and J. Xu, "Lateral mode dynamics of semiconductor lasers," IEEE J. Quantum Electron., vol. 35, no. 12, pp. 1904-1911, 1999.

J. Li, C. Papadopoulos, and J. M. Xu, "Highly-ordered carbon nanotube arrays for electronics applications," Appl. Phys. Lett., vol. 75, no. 3, pp. 367-369, 1999.

A.A. Tager, R. Gaska, I.A. Avrutsky, M. Fay, H. Chik, A.J. SpringThorpe,  S. Eicher, J.M. Xu, and M. Shur, "Ion-implanted GaAs-InGaAs lateral current injection laser," IEEE J. Sel. Top. Quantum Electron., vol. 5, no. 3, pp. 64-672, 1999.

I.A. Avrutsky, M. Fay, and J.M. Xu, "Multiwavelength diffraction and apodization using binary superimposed gratings," IEEE Photon. Tech. Lett., vol. 10, no. 6, pp. 839-841, 1998.

J. Haruyama, D.N. Davydov, D. Routkevitch, D. Ellis, B.W. Statt, M. Moskovits, and J.M. Xu, "Coulomb blockade in nano-junction array fabricated by nonlithographic method," Solid-State Electron., vol. 42, no. 7-8, pp. 1257-1266, 1998.

A. Othonos, J. Bismuth, M. Sweeny, A. Kevorkian, and J.M. Xu, "Superimposed grating wavelength division multiplexing in Ge-doped SiO2/Si planar waveguides," Opt. Eng., vol. 37, no. 2, pp. 717-720, 1998.

E.H. Sargent, G.L. Tan, and J.M. Xu, "Lateral current injection lasers: underlying mechanisms and design for improved high-power efficiency," IEEE J. Lightwave Tech., vol. 16, no. 10, pp. 1854-1864, 1998.

E.H. Sargent, D.A. Suda, A. Margittai, F.R. Shepherd, M. Cleroux, G. Knight, N. Puetz, T. Makino, A.J. SpringThorpe, G. Chik, and J.M. Xu, "Experimental study of LCI lasers fabricated by single MOCVD overgrowth followed by selective dopant diffusion," IEEE Photon. Tech. Lett., vol. 10, no. 11, pp. 1536-1538, 1998.

G.L. Tan, and J.M. Xu, "Modeling of gain, differential gain, index change and linewidth enhancement factor for strain-compensated InGaAs-GaAsP-InGaP QWs," IEEE Photon. Tech. Lett., vol. 10, no. 10, pp/ 1386-1388, 1998.

D.N. Davydov, J. Haruyama, D. Routkevitch, B.W. Statt, D. Ellis, M. Moskovits, and J.M. Xu, "Nonlithographic nanowire-array tunnel device: fabrication, zero-bias anomalies and Coulomb blockade," Phys. Rev. B., vol. 57, no. 21, pp. 13550-13553, 1998.

E.H. Sargent, J.M. Xu, C. Caneau, and C.-E., Zah, "Experimental investigation of physical mechanisms underlying lateral current injection laser operation," Appl. Phys. Lett., vol. 73, no. 3, pp. 285-287, 1998.

X. Fu, R. Gordon, G.L. Tan, and J.M. Xu, "Third-order nonlinearity induced lateral-mode frequency locking and beam instability in the high-power operation of narrow-ridge semiconductor lasers," IEEE J. Quantum Electron., vol. 34, no. 8, pp. 1447-1454, 1998.

E.H. Sargent, K. Oe, C. Caneau, and J.M. Xu, "OEIC-enabling LCI lasers with current guides: Combined theoretical-experimental investigation of internal operating mechanisms," IEEE J. Quantum Electron., vol. 34, no. 7, pp. 1280-1287, 1998.

I.A. Avrutsky, D. Ellis, A. Tager, H. Anis, and J.M. Xu, "Design of widely tunable semiconductor lasers and the concept of binary superimposed gratings (BSG)," IEEE J. Quantum Electron., vol. 34, no. 4, pp. 729-741, 1998.

A.J. Bennett, R.D. Clayton, and J.M. Xu, "Above-threshold longitudinal profiling of carrier nonpinning and spatial modulation in asymmetric cavity lasers," J. Appl. Phys., vol. 83, no. 7, pp. 3784-3788, 1998.

G.L. Tan, E.H. Sargent, and J.M. Xu, "A tilted mirror for lateral mode discrimination and higher kink-free power in fiber pump lasers," J. Quantum Electron., vol. 34, no. 2, pp. 353- 365, 1998.

X. Fu, M. Fay, and J.M. Xu, "1 x 8 supergrating wavelength-division demultiplexer in a silica planar waveguide," Optics Lett., vol. 22, no. 21, pp. 1627-1629, 1997.

I. Avrutsky, R. Gordon, R. Clayton, and J.M. Xu, "Investigations of the spectral characteristics of 980nm InGaAs/GaAs/AlGaAs lasers," J. Quantum Electron., vol. 33, no. 10, pp. 1801-1809, 1997.

E. Sargent, G.-L. Tan, and J.M. Xu, "Physical model of OEIC-compatible lateral current injection lasers," IEEE J. Sel. Top. Quantum Electron., vol. 3, no. 2, pp. 507-512, 1997.

D. Ellis and J.M. Xu, "Electro-opto-thermal modeling of threshold current dependence on temperature," IEEE J. Sel. Top. Quantum Electron., vol. 3, no.2, pp. 640-648, 1997.

X. Fu and J.M. Xu, "A novel grating-in-etalon WDM device and a proof-of-concept demonstration of a 1x40 polarization insensitive WDM," IEEE Photon. Tech. Lett., vol. 9, no. 6, pp. 779-781, 1997.

A.A. Tager, M. Moskovits, and J.M. Xu, "Spontaneous charge polarization in single-electron tunneling through coupled nanowires," Phys. Rev. B., vol. 55, no. 7, pp. 4530-4538, 1997.

G.L. Tan, R. Mand, and J.M. Xu, "Self-consistent modeling of beam instabilities in 980nm fiber pump lasers," J. Quantum Electron., vol. 33, no. 8, pp. 1384-1395, 1997.

Q.M. Zhang, J. Sitch, J. Hu, R. Surridge, and J.M. Xu, "A new large signal HBT model," IEEE Trans. Microwave Theory Tech., vol. 44, no. 11, pp. 2001-2009, 1997.

M. Xu, R. Clayton, G.L. Tan, and J.M. Xu, "Increased threshold for the first-order lateral mode lasing in low-ridge waveguide high power QW lasers," IEEE Photon. Tech. Lett., vol. 8, no. 11, pp. 1444-1446, 1996.

D. Routkevitch, T. Bigioni, M. Moskovits, and J.M. Xu, "Electrochemical fabrication of CdS nanowire arrays in porous anodic aluminum oxide templates," J. Phys. Chem., vol. 100, no. 33, pp. 14037-14047, 1996.

K. Lee, H. Anis, T. Makino, and J.M. Xu, "The effect of field-interference in modelling gain-coupled DFB lasers," Can. J. Phys., vol. 74, pp. S20-S40, 1996.

M.S. Shur, S.M. Sze, and J.M. Xu, "Present and future trends in device science and technologies - Preface," IEEE Trans. Electron Dev., vol. 43, no. 10, pp. 1618-1620, 1996.

D. Routkevitch, A.A. Tager, J. Haruyama, D. Almawlawi, M. Moskovits, and J.M. Xu, "Nonlithographic nano-wire arrays: fabrication, physics, and device applications," IEEE Trans. Electron Dev., vol. 43, no. 10, pp. 1646-1658, 1996.

H. Anis, T. Makino, and J.M. Xu, "Effect of gain coupling on the intermodulation distortion in DFB laser," IEEE Photon. Tech. Lett., vol.8, no. 8, pp. 995-997, 1996.

E.H. Sargent, D. Pavlidis, H. Anis, N. Golinescu, J.M. Xu, R. Clayton, and H.B. Kim, "Longitudinal carrier density profiling in semiconductor lasers via spectral analysis of side spontaneous emission," J. Appl. Phys., vol. 80, no. 3, pp. 1904-1906, 1996.

S. Medhi Fakhraie, J.M. Xu, and K.C. Smith, "Design of CMOS quadratic neural networks," IEEE Pacific Rim Conf. Communications, Computers, and Signal Processing, pp. 493-496, 1995.

D.A. Suda, H. Lu, T. Makino, and J.M. Xu, "An investigation of lateral current injection laser internal operation mechanisms," IEEE Photon. Tech. Lett., vol. 7, no. 10, pp. 1122- 1124, 1995.

M.L. Xu, G.L. Tan, J.M. Xu, M. Ohkubo, T. Fukushima, M. Irikawa, and R.S. Mand, "Ultra-high differential gain in GaInAs/AlGaInAs quantum wells: experiment and modeling," IEEE Photon. Tech. Lett., vol. 7, no. 9, pp. 947-949, 1995.

N. Bewtra, D.A. Suda, G.L. Tan, F. Chatenoud, and J.M. Xu, "Modeling of quantum well lasers with electro-opto-thermal interaction," IEEE J. Sel. Top. Quantum Electron., vol. 1, no. 2, pp. 331-340, 1995.

H. Anis, T. Makino, and J.M. Xu, "Mirror effects on dynamic response of surface emitting lasers," IEEE Photon. Tech. Lett., vol. 7, no. 3, pp. 232-234, 1995.

A.I. Akhtar and J.M. Xu, "Differential gain in coupled quantum well lasers," J. Appl. Phys., vol. 78, no. 5, pp. 2962-2969, 1995.

J. Guthrie, G.L. Tan, M. Irikawa, R.S. Mand, and J.M. Xu, "Beam instability of 980nm power laser: experiment and analysis," IEEE Photon. Tech. Lett., vol. 6, no. 12, pp. 1409-1411, 1994.

R.Q. Yang, J.M. Xu, and M. Sweeny, "Selection rules of intersubband transitions in conduction band quantum wells," Phys. Rev. B., vol. 50, no. 11, pp. 7474-7482, 1994.

R.Q. Yang, J.M. Xu, and H.C. Liu, "Effect of nonparabolicity on the lifetime limited frequency in resonant tunneling diodes," Superlatt. Microstruct., vol.14, no. 2-3, pp. 195-198, 1994.

J. Hu, Q.M. Zhang, R.K. Surridge, J.M. Xu, and D. Pavlidis, "A new emitter design of InGaP/GaAs HBT's for high frequency applications," IEEE Electron Device Lett., vol. 14, no. 12, pp. 563-565, 1993.

V. Minier and J.M. Xu, "Coupled-mode analysis of superimposed phase grating guided-wave structures and intergrating coupling effects," Opt. Eng., vol. 32, no. 9, pp. 2054-2063, 1993.

G.L. Tan, J.M. Xu, and M.S. Shur, (Invited) "A GaAs/AlGaAs double-heterojunction lateral PIN ridge waveguide laser," Opt. Eng., vol. 32, no. 9, pp. 2042-2045, 1993.

J. Hu, Q.M. Zhang, R.K. Surridge, J.M. Xu, and D. Pavlidis, "A new emitter design of InGaP/GaAs HBTs for high-frequency applications," IEEE Electron Dev. Lett., vol. 14, no. 12, pp. 563-565, 1993.

V. Minier, A, KĂŠvorkian, and J.M. Xu, "Superimposed phase gratings in planar optical waveguides for wavelength demultiplexing applications," IEEE Photon. Tech. Lett., vol. 5, no. 3, pp. 330-333, 1993.

E. Abbott, M. Lee, R. Mand, M. Sweeny, and J.M. Xu, "A quantum gate current model," IEEE Trans. Electron Dev., vol. 40, no. 5, pp. 1022-1024, 1993.

J. Lu, R. Surridge, G. Paulski, H. van Driel, and J.M. Xu., "Studies of high speed metal-semiconductor-metal photodetector with a GaAs/AlGaAs heterostructure," IEEE Trans. Electron Dev., vol. 40, no. 6, pp. 1087-1092, 1993.

C. Wu, C. Rolland, F. Shepherd, C. Laroque, N. Puetz, K.D. Chik, and J.M. Xu, "InGaAsP/InP vertical directional coupler filter with optimally designed wavelength tunability," IEEE Photon. Tech. Lett., vol. 5, no. 4, pp. 457-459, 1993.

A.I. Akhtar, C.-Z. Guo, and J.M. Xu, "Effect of well-coupling on the optical gain of multi-quantum-well lasers," J. Appl. Phys., vol. 73, no. 9, pp. 4579-4585, 1993.

D.J. Day, R.Q. Yang, J. Lu, and J.M. Xu, "Experimental demonstration of resonant interband tunnel diode with room temperature peak-to-valley ratio over 100," J. Appl. Phys., vol. 73, no. 3, pp. 1542-1544, 1993.

L.V. Iogansen, V. Malov, and J.M. Xu, "Time dependent theory of double quantum well resonant interband tunnel transistor," Semicond. Sci. Technol., vol. 8, no. 4, pp. 568-574, 1993.

J.M. Xu, V.V. Malov, and L.V. Iogansen, "Comparison of resonant tunneling in a double-quantum-well three-barrier system and a single-quantum-well double-barrier system," Phys. Rev. B, vol. 47, no. 12, pp. 7253-7259, 1993.

C.M. Tan, J.M. Xu, and S. Zukotynski, "Electronic properties of n-i-n-i doping superlattices," J. Appl. Phys., vol. 73, no. 6, pp. 2921-2933, 1993.

R.Q. Yang and J.M. Xu, "Analysis of transmission in polytype interband tunneling heterostructures," J. Appl. Phys., vol. 72, no. 10, pp. 4714-4726, 1992.

G.L. Tan, N. Bewtra, K. Lee, and J.M. Xu, "A two-dimensional non-isothermal finite-element simulation of laser diodes," IEEE J. Quantum Electron., vol. 29, no. 3, pp. 822-835, 1993.

G.L. Tan, K. Lee, and J.M. Xu, "Finite-element light-emitter simulator (FELES): a new 2D software design tool for optoelectronic devices," Jpn. J. Appl. Phys., vol. 32, no. 1B, part 1, pp. 583-589, 1993.

R.Q. Yang and J.M. Xu, "'Leaky' quantum wells: a basic theory & applications," Can. J. Phys., vol. 70, pp. 1153-1158, 1993.

D.J. Day, R.Q. Yang, J. Lu, and J.M. Xu, "Investigation of the influence of the barrier thickness in double-well resonant tunnel diodes," Can. J. Phys., vol. 70, pp. 1013-1016, 1993.

C.Y. Wu, C.Z. Guo, and J.M. Xu, "Microwave-assisted high speed modulation of semiconductor lasers," Can. J. of Phys., vol. 70, pp. 1057-1063, 1993.

R.Q. Yang and J.M. Xu, "A calculation of the center wavelength in waveguide directional couplers," Opt. Commun., vol. 94, pp. 71-75, 1992.

V. Minier, A. KĂŠvorkian, and J.M. Xu, "Diffraction characteristics of superimposed holographic gratings in planar optical waveguides," IEEE Photon. Tech. Lett., vol. 4, no. 10, pp. 1115-1118, 1992.

Q.M. Zhang, G.L. Tan, W.T. Moore, and J.M. Xu, "Effects of displaced P-N-junction of heterojunction bipolar-transistors," IEEE Trans. Electron Dev., vol. 39, no. 11, pp. 2430-2437, 1992.

Q.M. Zhang, K. Lee, G.L. Tan, and J.M. Xu, "Analysis of the emitter-down configuration of double heterojunction bipolar transistors," IEEE Trans. Electron. Dev., vol. 39, no. 10, pp. 2220-2228, 1992.

Q.M. Zhang, G.L. Tan, W.T. Moore, and J.M. Xu, "Effects of displaced P-N junction on heterojunction bipolar transistors," IEEE Trans. Electron. Dev., vol. 39, no. 11, pp. 2430-2437, 1992.

R.Q. Yang and J.M. Xu, "Bound and quasi-bound states in 'leaky' quantum wells," Phys. Rev. B., vol. 46, no. 11, pp. 6969-6974, 1992.

Z.-M. Li, D. Landheer, M. Veilleux, D.R. Conn, R. Surridge, J.M. Xu, and R.I. McDonald, "Analysis of a resonant-cavity enhanced GaAs/AlGaAs MSM photodetector," IEEE Photon. Tech. Lett., vol. 4, no. 5, pp. 473-476, 1992.

J.M. Xu, A.G. MacDonald, L.V. Iogansen, D.J. Day, and M. Sweeny, "Study of peak and valley currents in double quantum well resonant interband tunnel diodes," J. Semicond. Sci. Technol., vol. 7, pp. 1097-1102, 1992.

J.M. Xu, R. Mand, A. SpringThorpe, and K.D. Chik, "Demonstration of novel quantum well gate-controlled photodetector switch," Electron. Lett., vol. 28, no. 5, pp. 501-503, 1992.

A.G. MacDonald, L.V. Iogansen, M. Sweeny, D.J. Day, and J.M. Xu, "Well width dependence of tunneling current in double-quantum-well resonant interband tunnel-diodes," IEEE Electron Dev. Lett., vol. 13, no. 3, pp. 155-157, 1992.

R.Q. Yang and J.M. Xu, "Self-focusing and coupling of electron waves in effective mass waveguides," Solid State Comm., vol. 81, no. 1, pp. 31-34, 1992.

R.Q. Yang, and J.M. Xu, "Energy dependent electron wave coupling between two asymmetric quantum well waveguides," Appl. Phys. Lett., vol. 59, no. 3, pp. 1-3, 1991.

R.Q. Yang and J.M. Xu, "Population inversion through resonant interband tunneling," Appl. Phys. Lett., vol. 59, no. 2, pp. 181-182, 1991.

G.L. Tan, Q.M. Zhang, and J.M. Xu, "Computation of field and charge transport in compound semiconductor devices - some new features and methods," IEEE Trans.? Magn., vol. 27, no. 5, pp. 4158-4161, 1991.

S.G. Zhou, M. Sweeny, J.M. Xu, and O. Berolo, "Chaotic behavior of quantum resonant tunneling diodes," Physica D, vol. 52, pp. 544-550, 1991.

R.Q. Yang, M. Sweeny, D. Day, and J.M. Xu, "Interband tunneling in heterostructure tunnel diodes," IEEE Trans. Electron Dev., vol. 38, no. 3, pp.442-446, 1991.

R.Q. Yang and J.M. Xu, "Analysis of guided electron waves in coupled quantum wells," Phys. Rev. B, vol. 43, no. 2, pp. 1699-1706, 1991.

J.M. Xu, T.J. Moore, and M. Sweeny, "Characteristics of displaced PN- and hetero- junctions," Solid State Electron., vol. 34, no. 4, pp. 423-425,1991.

W.A. Hagley, D.J. Day, D.S. Malhi, and J.M. Xu, "High speed noise immune AlGaAs/GaAs HBT logic for static memory application," IEEE Trans. Electron Dev., vol. 38, no. 4, pp. 932-934, 1991.

C. Wu, C. Rolland, N. Puetz, R. Bruce, K.D. Chik, and J.M. Xu, "A vertically coupled InGaAsP/InP directional coupler filter of ultranarrow bandwidth," IEEE Photon. Tech. Lett., vol. 3, no. 6, pp. 519-521, 1991.

Z.Y. Zhao, Q.M. Zhang, G.L. Tan, and J.M. Xu, "A new preconditioner for CGS iteration in solving large sparse nonsymmetric linear equations in semiconductor device simulation," IEEE Trans. CAD, vol. 10, no. 11, pp. 1432-1440, 1991.

C.M. Tan and J.M. Xu, "Assessment of the performance potential of quantum resonant tunneling structure under current density constraint," Intl. J. Electron., vol. 70, no. 4, pp. 703-712, 1991.

D.J. Day, Y. Chung, C. Webb, J.N. Eckstein, J.M. Xu, and M. Sweeny, "Double quantum well resonant tunnel diodes," Appl. Phys. Lett., vol. 57, no. 12, pp. 1260-1261, 1990.

Q.M. Zhang, G.L. Tan, J.M. Xu, and D.J. Day, "Current gain and transit time effects in HBT's with graded emitter and base regions," IEEE Electron Dev. Lett., vol. 11, no. 11, pp. 508-510, 1990.

C.C. Sun, J.M. Xu, A. Hagley, R. Surridge, and A. SpringThorpe, "Electron mobility measurement in short-channel FET's using the cutoff frequency method," IEEE Electron Dev. Lett., vol. 11, no. 9, pp. 382-384, 1990.

C.C. Sun, J.M. Xu, A. Hagley, R. Surridge, and A. SpringThorpe, "Measurement of source and drain series resistances of HIGFETs using a bias-scan method," Solid State Electron., vol. 33, no. 10, pp. 1279-1282, 1990.

C.C. Sun, J.M. Xu, A. Hagley, R. Surridge, and A. SpringThorpe, "Observation of electron velocity overshoot in AlxGa1-xAs/GaAs heterostructure insulated gate field- effect transistors," Appl. Phys. Lett., vol. 57, no. 6, pp. 566-568, 1990.

D.J. Day, Y. Chung, C. Webb, J.N. Eckstein, J.M. Xu, and M. Sweeny, "Heterostructure p-n junction tunnel diodes," Appl. Phys. Lett., vol. 57, no. 11, pp. 1140-1142, 1990.

C.C. Sun and J.M. Xu, "An experimental investigation of the transverse electric field in CCD," J. Opt. Quantum Electron., vol. 22, pp. 55-63, 1990.

C.M. Tan, J.M. Xu, and S. Zukotynski, "Study of resonant tunneling structures: a hybrid incremental airy function-plane wave approach," J. Appl. Phys., vol. 67, no. 6, pp. 3011-3017, 1990.

P.M. Smith, D.R. Conn, and J.M. Xu, "The limits of resonant tunneling diode- subharmonic mixer performance," J. Appl. Phys., vol. 66, no. 3, pp. 1454-1458, 1990.

M. Sweeny and J.M. Xu, "Hole energy levels in zero-dimensional quantum balls," Solid State Comm., vol. 72, no. 3, pp. 301-304, 1989.

Y. Okada, J.M. Xu, H.C. Liu, D. Landheer, M. Buchanan, and D.C. Houghton, "Noise characteristics of a Si/SiGe resonant tunneling diode," Solid State Electron., vol. 32, no. 9, pp. 797-800, 1989.

M. Sweeny and J.M. Xu, "On photon-assisted tunneling in quantum well structures," IEEE J. Quantum Electron., vol. 25, no. 5, pp. 885-888, 1989.

M. Sweeny and J.M. Xu, "Resonant interband tunnel diodes," Appl. Physics Lett., vol. 54, no. 6, pp. 546-548, 1989.

C.C. Sun and J.M Xu, "The stepped-gate-oxide structure - a new approach for speed enhancement in the gate-controlled photodetector," Appl. Phys. Lett., vol. 54, no. 14, pp. 1335- 1337, 1989.

C.C. Sun and J.M. Xu, "Observation of capacitive modulation of bipolar current in crystalline silicon gated P-I-N structures," Appl. Phys. Lett., vol. 54, no. 19, pp. 1875-1877, 1989.

M. Sweeny, J.M. Xu, and M. Shur, "Hole subbands in one-dimensional quantum well wires," Superlatt. Microstruct., vol. 4, pp. 623-626, 1988.

J. Zou, J.M. Xu, and M. Sweeny, "Effects of asymmetric barriers on resonant tunneling current," J. Semicond. Sci. Tech., vol. 3, no. 8, pp. 819-822, 1988.

J.M. Xu and M. Shur, "Temperature dependence of electron mobility and peak velocity in compensated GaAs," Appl. Phys. Lett., vol. 52, no. 11, pp. 922-924, 1988.

J.M. Xu and M. Shur, "Double base hot electron transistors," Superlatt. Microstruct., vol. 4, no. 3, pp. 329-332, 1988.

J.M. Xu and M. Shur, "Double Ridley-Watkins-Hilsum-Gunn effect in compensated GaAs," Solid State Electron., vol. 31, no. 3-4, pp. 607-610, 1988.

J.M. Xu and M. Shur, "Velocity-field characteristics with two maxima in compensated GaAs," Phys. Rev. B, vol. 36, no. 2, pp. 1352-1354, 1987.

J.M. Xu and M. Shur, "Ballistic transport in hot electron transistors," J. Appl. Phys., vol. 62, no. 9, pp. 3816-3820, 1987.

J.M. Xu, M. Shur, and M. Hack, "Amplification of bipolar current flow by charge induced from an insulated gate electrode," J. Appl. Phys., vol. 62, no. 3, pp. 1108-1111, 1987.

J.M. Xu and M. Shur, "Velocity-field dependence in GaAs," IEEE Trans. Electron Dev., vol. 34, no. 8, pp. 1831-1832, 1987.

J.M. Xu and M. Shur, "A tunneling emitter bipolar transistor," IEEE Electron Dev. Lett., vol. EDL-7, no. 7, pp. 416-418, 1986.

J.M. Xu, B.A. Bernhart, M. Shur, C.H. Chen, and A. Peczalski, "Electron mobility and velocity in compensated GaAs," Appl. Phys. Lett., vol. 49, no. 6, pp. 342-344, 1986.

A. Van der Ziel, J.B. Anderson, A.M. Birbas, W.C. Chen, P. Fang, and J.M. Xu, "Shot noise in solid state diodes," Solid State Electron., vol. 29, no. 10, pp. 1069-1071, 1986.

D.K. Arch, J.K. Abrokwah, P.J. Vold, A.M. Fraasch, R.R. Daniels, M. Shur, and J.M. Xu, "Modulation doped field-effect transistors utilizing superlattice AlGaAs/n+-GaAs charge control layers," IEEE Trans. Electron Dev, vol. 33, no. 11, 1986.

Y.S. Ling, M. Zhang, J.M. Xu, M. Vallierses, R. Gilmore, and D.H. Feng, "The multi-J nuclear dynamical supersymmetry U(6/20)," Phys. Lett., vol. 148b, no. 1-3, pp. 13-19, 1984.